radio buttons problem (please help !)

Question

Hi I need some help with a radio button problem. I have a calculator app and four radio buttons on the form for the four known bases (168210). The problem appears when I check one of the radio buttons the other ones are unchecked. That's fine but how do I know which radio button was checked before I checked the second radio button? I've tried the following: private void radionBtnHexa_CheckedChanged(object sender System.EventArgs e) { if (radioBtnDecimal.Checked == true) { // ... code here ... } // ... coed here ... } Please help me ! I need help because I've tried in several ways and it doesn't work and it's really important to get this thing working. :( Thanx in advance for any help provided ! :) Cheers to all Adisor

joy.simpson · Answer

Not sure exactly what you want to do. If you want the conversion in a textbox to change when a different radio button is clicked then use this code: private void rdoDec_CheckedChanged(object sender System.EventArgs e) { if(true == rdoDec.Checked) txtDigital.Text = Decimal; } private void rdoBin_CheckedChanged(object sender System.EventArgs e) { if(rdoBin.Checked == true) txtDigital.Text = Binary; } private void rdoOct_CheckedChanged(object sender System.EventArgs e) { if(rdoOct.Checked == true) txtDigital.Text = Octal; } private void rdoHex_CheckedChanged(object sender System.EventArgs e) { if(rdoHex.Checked == true) txtDigital.Text = Hexadecimal; }